Strip-covering machine



E. D. PUTT STRIP COVERING MACHINE June 12', 1928. 1,673,530

Filed Ma h 5, 1927 a; Z 2f 2? INVENTOR. f1] vv/gfin llFL/T T w ATTORNEY.

Patented June 12, 1928.

UNITED STATES PATENT, OFFICE.

EDWARD 1). rural, or AKRON, oHio, ASSIGNOR T0 nn rrnnsroivzi rrnniiun RUBBER COMPANY, or AKRON, oHIo, 'n'oonronnr oiv or OHIO.

STRIP-COVERING MACHINE.

Application filed March 3, 1927. SeriaI No. 172,282.

This invention relatesto machines for covering strip material and particularly to machines for applying and binding a band of fabric about a core of strip material.

An object of the invention is to provide means for assembling a core of strip ma terial and a band of fabric, means for fold ing or wrapping the fabric about the core,

and means for stitching or binding the fabric to the core.

The foregoing and other objects are obtained by the device illustrated in the accompanying drawings and described below. It is to be understood that the device is not limited to the specific form thereofdisclosed herein.

Of the accompanying drawings:

Figure 1 is a front elevation of a machine embodying the princi les of the invention;

Figure 2 is a plan t ereof; and

Figure 3 is an elevational detail on an enlarged scale of a portion of the device.

Referring more particularly to the drawings, 10 represents the table or bed of the machine, having attached thereto a bracket 11 upon which is mounted a core or strip guiding tube 12 and a fabric guide plate 13. Guide bar 14 is adjustably clamped to plate 13 to accommodate different widths of fabric band 15 guided thereover, said band being taken from a supply reel (not shown) and assed under bars 16 and 17. The core 18 of strip material to be covered is drawn through guide tube 12 from a supply reel (not shown) by a driven feed roller 19, splined on shaft 20 and having a series of different-sized grooves for engaging various sizes of cores 18. Roller 19 is shiftable along shaft 20 to align any desired groove with guide tube 12 and a spring pressed pressure roller 19 for retaining the core in the tube. When roller 19 is properly adjusted, it is fixed in position and core 18 is passed between the groove and pressure roller 19. Band 15 and core 18 are then passed together through a fixed, fabric folding tube 21 having a cam surface 22 for folding or wrapping band 15 about core 18. While a single strip of fabric may be employed, band 15 is preferably composed of two layers of bias-cut fabric of the same width, but with oppositely projecting edges, so that when the band is folded around the core, the edges of each layer of fabric will abut, respectively, and the seam 1n the outer layer overlap the seam in the inner-layer.-

Eachlayer of fabric isirubberized or coated with cement to cause the layers to adhere to each other and to the core. A sheet, metal guard 23 is attached to the forward end of tube 21 to prevent the fabric from touching and adhering to the core before being entirely wrapped around the latter.

In order to stitch or compress band 15 more securely about the core, the wrapped core is passed through the central aperture 24 of rotatable disc 25 journaled in bracket 26 attached to table 10. The free end of' stitcher arm 27 pivoted to disc 25,-is yieldingly pressed against the wrapped core by tension spring 28, so that the wrapping is tightly stitched down when disc 25 is rapidly rotated by belt 29 trained over disc 24- and pulley 3O fixed to motor shaft 31,

proper balance of disc 25 being maintained by a counterweight 32 attached thereto. From disc 25 the covered strip passes through an aperture in guide bracket 33 to a driven feed roller S g-being forced against said feed roller by a spring-pressed roller 35. Feed roller 34 is keyed to shaft 36, driven by a chain 37 from shaft 20, which is in turn driven from motor shaft 31 through suitablereduction gears 38 and 39 v and chain 40, whereby the feed rollers may be slowly rotated.

As the covered strip passesfrom the machine it may be wound on a reel (not shown) with a drive andleveLwind mechanism con which said core and band may be passed for wrapping the band of fabric about the core,

a disc journaled about the end of said tube and adapted to be rapidly rotated, a spring pressed pivoted stitcher arm carried by said. disc with the free end of said arm adjacent the center of said disc, said disc having a central aperture through which the covered strip may bepassed, whereby pressure of the pivoted arm rapidly rotated by the disc will stitch the fabric band tightly about the core;

and a feed roller for drawing the finished 1 product from the machine.

'2; strip covering machine com' rising in combination, means for slowly ceding and guiding lnto said machine. a core of strip material and a band of fabric to be wrapped thereabout, means for folding the band of fabric about the core, means for preventing the" unwrapped portion of the band from prematurely adhering to the core, ai'entrall y apertured disc journaled adj aeent said folding means and" adapted to be rapidly rotated, a spring-pressed pivoted stitcher arm carried by said disc with the free end of said arm adjacent the center of said disc, whereby pressure of the pivoted arm rapidly rotated by the disc will stitch the fabric band tightly about the core as the wrapped core slowl passed axially through the aperture in t e disc, and means for drawing thefinished pnoduct from the machine. a

EDWARD. D. PU'TT. 

